body, button {
  margin: 0;
  padding: 0;
}
body {
  width: 100%;
  min-height: 100vh;
  background: url('bk.png') no-repeat 0 0;
  background-size: 100% 100%;
}
.tetris{
  width: 960px;
  /* height: 660px; */
  margin: 0 auto;
  padding: 20px 0;
  overflow: hidden;
}
.tetris .main {
  width: 600px;
  float: left;
  position: relative;
}
.tetris .operate {
  width: 360px;
  float: left;
  margin-top: 30px;
}
.title {
  width: 370px;
  margin: 0 auto;
  font-size: 24px;
  font-weight: bold;
  color: #cf1f5d;
  padding: 6px;
  overflow: hidden;
}
.game-name {
  float: left;
  text-shadow: 2px 2px 4px #54e075
}
.game-score{
  float: right;
  text-shadow: 2px 2px 4px #54e075
}
.operate-btn{
  width: 200px;
  height: 80px;
  background: url('button.png') no-repeat 0 0;
  cursor: pointer;
  margin: 16px auto;
}
.operate-btn>span{
  font-size: 24px;
  color: #ffffff;
  display: inline-block;
  margin-top: 18px;
  letter-spacing: 1px;
  font-weight: bold;
  -moz-user-select:none;/*火狐*/
  -webkit-user-select:none;/*webkit浏览器*/
  -ms-user-select:none;/*IE10*/
  -khtml-user-select:none;/*早期浏览器*/
  user-select:none;
}
.operate-btn--bk1{
  background-position: -10px -85px; 
}
.operate-btn--bk2{
  background-position: -10px -170px; 
}
.move {
  margin: 60px auto 0;
}
.move>span{
  display: inline-block;
  width: 58px;
  height: 58px;
  line-height: 58px;
  background: url('button.png') no-repeat 0 0;
  background-position: -78px -178px;
  color: #ffffff;
  font-size: 30px;
  border-radius: 10px; 
  margin: 0 5px;
  cursor: pointer;
  -moz-user-select:none;/*火狐*/
  -webkit-user-select:none;/*webkit浏览器*/
  -ms-user-select:none;/*IE10*/
  -khtml-user-select:none;/*早期浏览器*/
  user-select:none;
}
.tip {
  color: #cf1f5d;
  text-align: left;
  width: 200px;
  margin: 30px auto 0;
  border: 2px solid #db5383;
  border-radius: 5px;
  padding: 5px;
  background: rgba(219, 83, 131, 0.3) 
}
#tetris-wrapper{
  background: #aed27a;
}
.gameover-wraaper {
  width: 390px;
  height: 660px;
  background: rgba(0, 0, 0, 0.5);
  position: absolute;
  top: 43px;
  left: 105px;
}
.gameover{
  width: 200px;
  height: 80px;
  background: url('button.png') no-repeat 0 0;
  background-position: -10px -170px; 
  position: absolute;
  top: 280px;
  left: 105px;
}
.gameover>span{
  font-size: 24px;
  color: #ffffff;
  display: inline-block;
  margin-top: 18px;
  letter-spacing: 1px;
  font-weight: bold;
}